Base for precious stones



FIG. 1 is a perspective view of the base;

FIG. 2 is a reduced top view of the base shown in FIG. 1;

FIG. 3 is a bottom view of the base shown in FIG. 1; and,

FIG. 4 is a side view of base shown in FIG. 1.

The broken lines shown in the drawing are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a base for precious stones, as shown and described. 